HPC Optimisation Senior Scientific Software Engineer

Met Office; Exeter; Hybrid; GBP 55,000 - 65,000; Full time

Benefits offered by this job

Civil Service pension

Market supplement

Annual leave 27.5–32.5 days

Job summary

The Met Office in the United Kingdom is seeking an HPC Optimisation Senior Scientific Software Engineer to develop, support and optimise large-scale climate and weather applications on HPC systems. The role is full time (37 hours per week) with a potential hybrid working pattern.

You will contribute to next-gen modelling and leverage data science (AI/ML) across national capability, collaborating with internal and international teams to deliver impactful results.

Qualifications

• Lead in HPC code optimisation and improving computational performance of large-scale scientific apps.
• Engage with internal and external stakeholders to understand requirements and plan effectively.
• Promote QA practices and standards across projects.
• Mentor peers and share knowledge to improve team outcomes.

Responsibilities

• Analyse and optimise the performance of complex, large-scale scientific applications.
• Design and conduct benchmarks to assess performance on current and future supercomputer hardware.
• Analyse and tune performance of operational workloads with workload teams to remove bottlenecks.
• Apply HPC expertise to diagnose and resolve complex issues and provide guidance to users.
• Develop novel software and methods to improve performance, scalability and portability on HPC architectures.
• Collaborate with scientific/technical colleagues to improve HPC applications.
• Maintain and share expertise in optimisation tools, parallel programming and algorithms.

Skills

HPC code optimisation

Performance analysis tools

Stakeholder engagement

Quality assurance

Mentoring / knowledge sharing

Tools

MPI

Fortran/C++

Linux HPC

Job description

We’re looking for an exceptional HPC Optimisation Senior Scientific Software Engineer to help us make a difference to our planet. As our HPC Optimisation Senior Scientific Software Engineer, the job may be suitable for hybrid working, which is where an employee works part of the week in the office and part of the week from home. This is a voluntary, non-contractual arrangement and the location advertised will be your contractual place of work. Our opportunity is full time, 37 hours per week. Our people are at the heart of what we do and we'll do our best to agree a working pattern that works for everyone.

World changing work

From science to technology, from meteorology to management, and from planning to communication, our expertise helps us stand out as the authority on weather accuracy and climate prediction. We help individuals, industries and government to make better decisions to stay safe and thrive. This is the Met Office. This is who we are.

Your world of expertise

As a HPC Optimisation Senior Scientific Software Engineer you will contribute to the development, support, and optimisation of large-scale parallel climate and weather applications on HPC systems.

We are currently in a major push to develop our Next Generation Modelling Systems, to help exploit our new world-leading supercomputer capability and to support our adoption of data science (specifically artificial intelligence and machine learning) across our national capability, and you will be working towards these objectives in some form.

The Senior Scientific Software Engineer (SSE) role is a varied one, with many opportunities for development, progression and finding new challenges both within the SSE career family and beyond.

Being a Senior SSE is about far more than just technical skills – you will need to be able to work alongside colleagues in a range of areas, both technical and scientific. We frequently require our SSEs to collaborate internally and internationally.

Your key duties

• Analyse and optimise the performance of complex, large-scale scientific applications.
• Design and conduct benchmarks to assess the performance of scientific applications on current and future supercomputer hardware.
• Analyse and tune the performance of operational scientific workloads, working with the teams responsible for those workloads to identify and address performance bottlenecks.
• Apply HPC expertise to diagnose and resolve complex performance and technical issues, providing guidance to users and colleagues.
• Develop novel software, tools and methods to improve the performance, scalability and portability of large-scale scientific applications on current and future HPC architectures.
• Collaborate with and provide technical expertise to scientific and technical colleagues in the development and improvement of HPC applications.
• Maintain, extend and share expertise in optimisation tools, parallel programming techniques and algorithms, and current and future supercomputer capabilities.

Why join us

Our work is life-changing, often life-saving and always life-enhancing. The Met Office is Great Place to Work UK certified. We are also featured on their ‘Best Workplaces in Tech’ 2023, 2024 and 2025 lists, as well as their ’54 Best Workplaces for Women’ 2023 list.

As our HPC Optimisation Senior Scientific Software Engineer, your total reward package will be up to £65,024 annually, which includes:

• £44,589 base pay
• An outstanding Civil Service pension, with an average employer contribution of 28.97%
• Recruitment Retention Allowance (RRA) you will be paid £2,700 per annum as a market supplement to reflect the demand for your skills. Whilst in post, you will be paid this marketdrivenallowance from April 2026 until March 2027 in your monthly pay
• Annual Leave starting at 27.5 days (plus Bank Holidays) rising to 32.5 days (plus Bank Holidays) after 5 years and option to buy or sell up to 5 days per year of annual leave

Essential Criteria, skills and experience:

• Lead Criteria: Demonstrate insight in High-Performance Computing Code Optimisation through improvements in computational performance of large-scale scientific applications and systematic use of code performance analysis tools. (We’re Experts by Nature)
• Engage effectively with internal and external stakeholders to understand requirements and the wider context of your work. Contribute significantly to developing plans that meet these requirements and inform wider strategic planning. (We’re Experts by Nature, Better Together)
• Promote good Quality Assurance processes, best practice, standards and/or regulations in your work and that of others. (We’re Experts by Nature, We Live and Breathe it)
• Communicate knowledge accurately and concisely through written communication and discussions, including with larger groups, adapting your approach for diverse audiences and building trust and credibility. (We’re Better Together)
• Proactively develop your own technical skills and support others to develop theirs through activities such as knowledge sharing, mentoring, coaching or collaboration, contributing to improved individual, team or organisational outcomes. (We Keep Evolving, Better Together, Experts by Nature)

Using AI in your application

We welcome applications that use AI tools for support in drafting or refining, as long as they accurately reflect your own skills and experience. All hiring decisions at the Met Office are made by people, not AI. For more details, visit our approach to recruitment.

How We Can Help

If you have any questions or would like to discuss this opportunity further, please contact us at [e-mail].

If you’re considering applying and need support to do so, please get in touch. You can request adjustments either within your application or by contacting us. Should you be offered an interview, please be aware there may be a selection exercise which could include a presentation, written test or a scenario-based activity. You can select in your application to be considered under the DisabilityConfidentScheme. To be invited to interview/assessment under this scheme, your application must meet the essential criteria for the role.

Weunderstand that great minds don’t always think alike and as an equal opportunities employer we welcome applications from those with all protected characteristics. We recruit on merit, fairness, and open competition in line with the Civil Service Code.

We can only accept applications from those eligible to live and work in the UK - please refer to GOV.UK for information. We require Security clearance without caveats and/or restrictions for this role, for which you need to have resided in the UK for at least 3 of the last 5 years to be eligible, 2 of these years must be immediately preceding the point of your application.

If you feel that your application has not been treated in accordance with the Recruitment Principles, and wish to make a complaint, then in the first instance you should contact us at: [e-mail] If you are not satisfied with the response that you receive, then you can contact the Civil Service Commission at: [e-mail]